Denise is constructing a square in which two of its vertices are points \( M \) and \( N \). She has already used her straightedge and compass to construct the lines and arcs shown. What should Denise do for her next step? Place the point of the compass on point \( M \) and draw any arc above it. Use a straightedge to draw Place the point of the compass on point \( N \) and draw an arc that intersects width for the opening of the compass. Use a straightedge to draw a horizontal line that contains point \( O \).

8 D'un rombe \( A B C D \) en coneixem tres vèrtexs: \( A(3,5) \), \( B(2,-2) \) i \( C(7,3) \). Determina'n el vèrtex \( D \). * Les diagonals d'un rombe es tallen en els seus punts mitjans i són perpendiculars entresi.

Soit \( A B C D \) un parallélogramme de centre \( O \) et \( E \) un point du plan tel que \( \overrightarrow{A E}=3 \overrightarrow{A B} \) soient I et J les projetés respectifs des points \( B \) et \( E \) sur la droite ( \( A C \) ) parallèlement à la droite (DE) 1) Construire une figure 2) Montrer que : \( \overrightarrow{A I}=\frac{1}{3} \overrightarrow{A J} \) 3) a) Montrer que \( O \) est le milieu de [IJ] b) En déduire que : \( A J=I C \)

Equacions de rectes I Escriu les equacions vectorials i paramètriques de la recta que passa per \( A \) i té direcció paral•lela al vector \( \overrightarrow{\mathrm{d}} \) en cada cas: \( \begin{array}{ll}\text { a) } A(-3,7), \overrightarrow{\mathrm{d}}(4,-1) & \text { b) } A(-1,0), \overrightarrow{\mathrm{d}}(0,2) \\ \text { Obtén } 2 \text { punts més per a cada recta. }\end{array} \)

Un triangolo rettangolo ha un angolo di 60 gradi. Calcola la misura del terzo angolo.

If you have a cone with a base diameter of 8 inches and a height of 6 inches, calculate the total surface area.